insecutor insciti^ menstruus 111 



Species 2 



Aedes increpitus mutatus Dyar. 



Grabhamia vittata Theobald (not Bigot), Can. Ent., xxxv, 313, 



1903. 

 Grabhamia vittata Blanchard (not Bigot), Les Moust, 397, 1905. 

 Ochlcrotatus vittata Coquillett (not Bigot), U. S. Dept. Agr., 



Bur. Ent., Tech. ser. 11, 20, 1906. 

 Grabhamia vittata Theobald (not Bigot), Mon. Culic, iv, 306, 



1907. 

 A'cdes vittatus Dyar (in part, not Bigot), Proc. U. S. Nat. Mus., 



xxxii, 126, 1907. 

 Grabhamia vittata Theobald (not Bigot), Mon. Culic, v, 284. 1910. 

 Airdes vittata Howard, Dyar & Knab (not Bigot), Mosq. N. & 



Cent. Am. & W. I., iv, 691, 1917. 

 A'cdes sansoni Dyar (not Dyar & Knab), Ins. Ins. Mens., v, 



114, 1917. 

 Acdcs sansoni Cockerell (not Dyar & Knab), Joum. Econ. Ent., 



xi, 199, 1918. 

 Acdes mutatus Dyar, Ins. Ins. Mens., vii, 24, 1919. 



This species flies through the river valleys of the arid region 

 from Montana to New Mexico. Though the adult is close to 

 excrncians in appearance and genitalic structure, the larvae are 

 very different. They breed in early river-pools following the 

 high water of spring. 



Aedes increpitus increpitus Dyar. 



A'cdes vittatus Dyar (in part, not Bigot), Proc. U. S. Nat. Mus., 



xxxii. 126, 1907. 

 Aedes increpitus Dyar, Ins. Ins. Mens., iv, 37, 1916. 

 Aedes increpitus Dyar, Ins. Ins., Mens., v, 14, 1917. 

 Airdes vittata Howard, Dyar & Knab (in part, not Bigot), Mosq. 



N. & Cent. Am. & W. I., iv, 691, 1917. 

 Acdcs increpitus Howard, Dyar & Knab, Mosq. N. & Cent. Am. 



& W. I., iv, 1041, 1917. 



This form inhabits the Sierra Nevada Mountains of Cali- 

 fornia, extends down to the coast in the forested region of 

 Humboldt County where the mountains approach the sea, 

 thence rather rare in the Coast Range. The larvae live in early 

 pools formed by rivers or the edges of lakes. 



